These samples and many others sit near a bit of Thor Heyerdahl's Kon Tiki; chunks from the USS Constitution--branded "Old Ironsides" during the War of 1812; samples from King Tut's tomb; and a 40 million year old piece of unfossilized
hickory discovered in the western United States and now only found in China.
The lithology consists of clay and silty clay, with some calcareous and basaltic pebbles; the upper 100 cm contains unfossilized
shells of freshwater gastropods.
They scout remote, undisturbed areas to survey and identify unfossilized
bones lying about on the ground and then compare the resulting list of species with the known inhabitants of that ecosystem.